Here's an open source "Uber" project, written largely in Haskell and heavily uses Nix/ direnv: https://github.com/nammayatri/nammayatri https://github.com/namm

Here's an open source "Uber" project, written largely in Haskell and heavily uses Nix/ direnv: https://github.com/nammayatri/nammayatri https://github.com/nammayatri/nammayatri There's dedicated direnv configuration for backend and frontend development: checkout `.envrc.backend` and `.envrc.frontend` files. They both use `use flake`, specifying the appropriate devShell argument.